Carcinoembryonic antigen blood test. Last reviewed: September 20, 2013. The CEA test measures the level of carcinoembryonic antigen (CEA) in the blood. CEA is a protein normally found in the tissue of a developing baby in the womb.The blood level of this protein disappears or becomes very low after birth.he CEA test measures the level of carcinoembryonic antigen (CEA) in the blood.
If the pH of your blood falls below 7.35, the result is a condition called acidosis, a state that leads to central nervous system depression. Severe acidosis-where blood pH falls below 7.00 - can lead to a coma and even death. If the pH of your blood rises above 7.45, the result is alkalosis.
Numerical Range. Normal blood pH is 7.4. Lower than pH 7.4, the blood is acidic, and higher than 7.4 the blood is basic, or alkaline. Large changes in blood acidity results in small changes in the pH.In other words, even if the pH moves only a little, that small amount can represent a significant change for the amount of excess or lost acid in the blood.ormal blood pH is 7.4. Lower than pH 7.4, the blood is acidic, and higher than 7.4 the blood is basic, or alkaline. Large changes in blood acidity results in small changes in the pH.